Stillman & Birn Zeta Series Premium Sketch Books
These sketch books feature high performance, pH neutral, lignin- and chloride-free paper. The heavy-weight 270 gsm (100 lb) paper has a smooth white surface that is suitable for all dry media and ink. With both internal and surface sizing, it will accept light washes, wet media and watercolor as well.
Softcover: The flexible, yet rugged covers have soft-bound sewn bindings and rounded edges to prevent fraying. Each book contains 26 sheets.
Hardcover: The covers are made with extra heavy-weight binders' board that is tough and resistant to warping. The hard-bound books contain 26 sheets and the wire-bound books contain 25 sheets Bound in the USA.